LOS ANGELES— In a summertime battle of sequels, a pair of kooky cops beat out flying dragons for the top spot at the box office.

The R-rated comedy “22 Jump Street” debuted in first place with $60 million, followed by “How to Train Your Dragon 2” which opened with $50 million in ticket sales, according to studio estimates Sunday.

“To have two movies that opened to 50-plus, that’s really good,” said Chris Aronson, head of distribution for Fox, which boasts three films in the top 10. “To have a PG-rated, animated film open against a hard R comedy, you gotta love that.”

It’s rare for two films to open with such big numbers on the same weekend, said Paul Dergarabedian, senior analyst for box-office tracker Rentrak. Dergarabedian notes it has happened three times before: last year when “Monsters University” opened against “World War Z”; in 2012 when “Madagascar 3” opened against “Prometheus”; and in 2008 when “WALL-E” opened against “Wanted.”

The original versions of “Dragon” and “Jump Street” were springtime releases, and their strong performances then led studios to offer sequels during the hot movie-going months of summer.

“When a studio has ultimate confidence in something, they will put it in that gladiator arena that is the summer season,” Dergarabedian said. “A sequel in the summer is like graduating.”

Sony’s “Jump Street” stars Channing Tatum and Jonah Hill as bumbling undercover officers who pose as college students to bust a campus drug dealer. Hill also lends a voice to the animated “Dragon,” the Fox feature that follows Hiccup and his winged dragon Toothless on an adventure where they discover hundreds of wild dragons and a mysterious dragon master.

Disney’s “Maleficent” claimed third place in its third week of release. Warner Bros.’ Tom Cruise action romp “Edge of Tomorrow” took the fourth spot, followed by last week’s top film, Fox’s teen tear-jerker “The Fault in Our Stars.”

Estimated ticket sales for Friday through Sunday at U.S. and Canadian theaters, according to Rentrak. Final domestic figures will be released on Monday.

1. “22 Jump Street,” $60 million.

2. “How to Train Your Dragon 2,” $50 million.

3. “Maleficent,” $19 million.

4. “Edge of Tomorrow,” $16.2 million.

5. “The Fault in Our Stars,” $15.7 million.

6. “X-Men: Days of Future Past,” $9.5 million.

7. “Godzilla,” $3.2 million.

8. “A Million Ways to Die in the West,” $3.1 million.

9. “Neighbors,” $2.5 million.

10. “Chef,” $2.3 million.

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Universal and Focus are owned by NBC Universal, a unit of Comcast Corp.; Sony, Columbia, Sony Screen Gems and Sony Pictures Classics are units of Sony Corp.; Paramount is owned by Viacom Inc.; Disney, Pixar and Marvel are owned by The Walt Disney Co.; Miramax is owned by Filmyard Holdings LLC; 20th Century Fox and Fox Searchlight are owned by 21st Century Fox; Warner Bros. and New Line are units of Time Warner Inc.; MGM is owned by a group of former creditors including Highland Capital, Anchorage Advisors and Carl Icahn; Lionsgate is owned by Lions Gate Entertainment Corp.; IFC is owned by AMC Networks Inc.; Rogue is owned by Relativity Media LLC.